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Ionisation energies of Ni and Pt in Kjmo...

Ionisation energies of `Ni` and `Pt` in `Kjmol^(-1)` are given below
`{:(,ubrace((IE)_(1)+(IE)_(2)),ubrace((IE)_(3)+(IE)_(4))),(Ni,2.49,8.80),(Pt,2.60,6.70):}`
So, (select the correct statement)

Text Solution

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Comparing `IE_1 + IE_2` and Ni and Pt, Ni has lower value than Pt therefore, `Ni^(+2)` will be more stable than `Pt^(+2)` where as on summating `IE_1, IE_2 , IE_3 and IE_4 . `
`Ni^(4+)=2.49+8.80=11.29`
`Pt^(4+)=2.66+6.70=9.36`
I.E. of Pt (IV) is less than Ni(V)
Therefore `Pt^(4+)` is more stable
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